<template>
    <div class="app-container">
      <el-form :inline="true" :model="dataForm" ref="dataForm">
        <el-form-item label="名称" prop="name">
          <el-input v-model="dataForm.name" placeholder="请输入课程名称"></el-input>
        </el-form-item>
        <el-form-item>
          <el-button icon="el-icon-search" type="primary" @click="getDataList()">查询</el-button>
          <el-button icon="el-icon-refresh-left" @click="resetForm()">重置</el-button>
        </el-form-item>
        <el-divider></el-divider>
        <el-form-item>
          <el-button icon="el-icon-plus" type="primary" @click="addOrUpdateHandle()">新增</el-button>
        </el-form-item>
      </el-form>
  
      <div class="avue-crud">
        <el-table
            :data="dataList"
            border
            v-loading="dataListLoading">
          <el-table-column
              prop="name"
              header-align="center"
              align="center"
              label="课程名">
          </el-table-column>
          <el-table-column
              prop="introduction"
              header-align="center"
              align="center"
              label="课程简介">
          </el-table-column>
          <el-table-column
              prop="createTime"
              header-align="center"
              align="center"
              label="创建时间">
          </el-table-column>
          <el-table-column
              prop="updateTime"
              header-align="center"
              align="center"
              label="更新时间">
          </el-table-column>
          <el-table-column
              header-align="center"
              align="center"
              label="操作">
            <template slot-scope="scope">
              <el-button type="text" size="small" icon="el-icon-delete" @click="deleteHandle(scope.row.id)">
                删除
              </el-button>
            </template>
          </el-table-column>
        </el-table>
      </div>
  
      <div class="avue-crud__pagination" style="float: right; margin-top: 35px">
        <el-pagination
            @size-change="sizeChangeHandle"
            @current-change="currentChangeHandle"
            :current-page="pageIndex"
            :page-sizes="[5, 10, 20, 50]"
            :page-size="pageSize"
            :total="totalPage"
            background
            layout="total, sizes, prev, pager, next, jumper">
        </el-pagination>
      </div>
      <!-- 弹窗, 新增 / 修改 -->
      <table-form v-if="addOrUpdateVisible" ref="addOrUpdate" @refreshDataList="getDataList"></table-form>
    </div>
  </template>
  
  <script>
  import {fetchList, delObj} from '@/api/teacher/course'
  import TableForm from './scourse-form'
  import {mapGetters} from 'vuex'
  
  export default {
    data() {
      return{
        dataForm: {
          name: ''
        },
        searchForm: {},
        dataList: [],
        pageIndex: 1,
        pageSize: 5,
        totalPage: 0,
        dataListLoading: false,
        addOrUpdateVisible: false
      }
    },
    components: {
      TableForm
    },
    created() {
      this.getDataList()
    },
    computed: {
      ...mapGetters(['permissions'])
    },
    methods: {
      resetForm(){
        this.$refs['dataForm'].resetFields()
        this.getDataList()
      },
      // 获取数据列表
      getDataList() {
        this.dataListLoading = true
        fetchList(Object.assign({
          current: this.pageIndex,
          size: this.pageSize
        }, this.dataForm)).then(response => {
          this.dataList = response.data.records
          this.totalPage = response.data.total
        })
        this.dataListLoading = false
      },
      // 每页数
      sizeChangeHandle(val) {
        this.pageSize = val
        this.pageIndex = 1
        this.getDataList()
      },
      // 当前页
      currentChangeHandle(val) {
        this.pageIndex = val
        this.getDataList()
      },
      // 新增 / 修改
      addOrUpdateHandle(id) {
        this.addOrUpdateVisible = true
        this.$nextTick(() => {
          this.$refs.addOrUpdate.init(id)
        })
      },
      // 删除
      deleteHandle(id) {
        this.$confirm('是否确认删除ID为' + id, '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(function () {
          return delObj(id)
        }).then(data => {
          this.$message.success('删除成功')
          this.getDataList()
        })
      }
    }
  }
  </script>
  